Adaptive Polarization Array (APA)
First Claim
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1. A method comprising:
- combining signals from two receive antennas having non-equal polarization to emulate a single receive antenna having a polarization state, the combining includes;
mapping a surface of a Poincaré
Sphere to a polarization search domain;
searching over the polarization search domain using a proxy metric, the proxy metric being a proxy for an estimated signal quality metric; and
adjusting the polarization state based on the searching
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Abstract
An Adaptive Polarization Array (APA) Algorithm is described for adjusting the polarization orientation of antennas, such as Dual-polarized array antennas. The APA Algorithm searches to find a polarization state that maximizes a signal quality of a received signal in the presence of interfering signals and noise. The search facilitates adjustment of a polarization state of, for example, receive antennas to maximize a signal quality metric. A proxy metric having no local maxima other than the global maximum is used to search the polarization search domain to find a best polarization state.
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Citations
20 Claims
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1. A method comprising:
combining signals from two receive antennas having non-equal polarization to emulate a single receive antenna having a polarization state, the combining includes; mapping a surface of a Poincaré
Sphere to a polarization search domain;searching over the polarization search domain using a proxy metric, the proxy metric being a proxy for an estimated signal quality metric; and adjusting the polarization state based on the searching - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method comprising:
combining signals from two receive antennas having non-equal polarization to emulate a single receive antenna having a polarization state, the combining includes; mapping a surface of a Poincaré
Sphere to a polarization domain;solving a closed form solution based at least in part on the polarization domain, wherein the solving includes calculating a real valued signal power array based in part on determining a complex gain applied to a vertical channel complex baseband array; adjusting the polarization state based on the solving. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A system comprising:
two receive antennas having non-equal polarization to emulate a single receive antenna having a polarization state, the single receive antenna including logic to; combine signals received by the two receive antennas; map a surface of a Poincaré
Sphere to a polarization domain;solve a closed form solution based at least in part on the polarization domain, wherein solving the closed form solution includes calculating a real valued signal power array based in part on determining a complex gain applied to a vertical channel complex baseband array; and adjust the polarization state based at least in part on the closed form solution.
Specification